There is no built-in functionality to link the dates in such manner. Unfortunately, Robert's suggestion is the only feasible option I can think of for this scenario.
Let me know if you need more information.
the Telerik team
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Public Issue Tracking
system and vote to affect the priority of the items.